John eborall hartley and herbert edward hartley



(Nuo Model.) Y

J. E.,& H. E. HARTLEY. ATTAGHABLE LETTERFOR SIGNS;

THE Nonnps PETERS oo.. Pamufno, WASHINGTON. o. a

UNITED STATES PATENT OFFICE.

JOHN EBORALL I-IARTLEYKAND HERBERT EDVARD HARTLEY, OF BIRMINGHAM,ENGLAND.

ATTACHABLE LETTER FOR SIGNS.

SPECIFICATION forming partk of Letters Patent No. 488,655, datedDecember 27, 1892.

Application tiled .Tune '7, 1892. Serial No. 435,906. (No model.)

To all whom t may concern:

Be it known that we, JOHN EBORALL HART- LEY and HERBERT EDWARD HARTLEY,subjects of the Queen of Great Britain, both residing at 13 Saint PaulsSquare, Birmingham,

England, have invented certain new and useful Improvements in AttachableLettersfor Signs, (for which We have applied for Letters Patent inEngland,No. 191, dated January 5, Io 1892;) and We do hereby declarethat the following is a full, clear, and exact description ot' theinvention, which will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to the manufacture of letters, including ofcourse numerals or other similar gures, used for signs, and its objectis to combine with a cast body of lead and antimony such letters thefollowing prozo cesses, rst, of an electro-deposition of copper, to befollowed by an electro deposition of gold or of silver, Which is thencoated with any of the well known coatings of Celluloid,

and further in combining with the last z5 named process, a furthercoating of seed-lac varnish.

IVe carry our invention into eect in the mannerillustrated in theaccompanying drawings in Which:-

Figure 1, is a view in elevation of a letter to which our improvedprocess is applied. Fig. 2, is an enlarged cross sectional plan view online l, 1, Fig. l.

We provide what are known as chill molds, 3 5 which are preferably madeof metal, but may be made of plaster of paris, the object being toobtain a perfectly smooth surface. We then melt an alloy composed ofiiveparts by Weight of lead and one part by Weight of an- 4o` timony,from which the letter A is cast.. The diiiiculty experienced inobtaining an alloy for casting these letters has been to get cheap alloythat willr How freely when fused, and aord a smooth surface free of airholes, when cold. The alloy herein stated We iind to answer thesepurposes satisfactorily. These and especially should the articles socoated"`wwmbe subject to frictional wear. In order to avoid thishowever, we add a further coating of colorless, or as near colorless asmay be, cold drying seed-lac varnish E. This we Iind to effectuallyprevent such chipping or peeling, and very much increasing the durationof the brilliancy of the letters.

The forms andsectional shapes otthe let-v ters, may of course be Variedand also by letters we include numerals or such similar figuresanalogous to letters, used for sign board purposes.

Ve are aware of varioos alloy compositions for casting purposes in whichantimony and lead have been used. Also we are aware that a film ofCelluloid has been already applied to preserve metallic surfaces fromatmospheric, gaseous or acidiferous action, also that the process ofelectro deposition in itself is old, and therefore We do not claim thoseprocesses or the composition broadly; but

What we do claim as new and desire to secure byv Letters Patent is Insign letters, numerals &c, the combination with the cast metal body, ofthe coating of copper, and the coating of precious metal and the filmsof celluloid and seed-lac varnish, substantially as described.

' JOHN EBORALL HARTLEY.

HERBERT EDWARD IIAR'ILEY. Witnesses:

CHARLES T. POWELL, ERNEST W. JONES.

